What are the end products of light-dependent reaction?
What are the end products of light-dependent reaction?
Difference between Light and Dark Reaction
| Light Reaction | Dark Reaction |
|---|---|
| The end products are ATP and NADPH. | Glucose is the end product. ATP and NADPH help in the formation of glucose. |
| The water molecules split into hydrogen and oxygen. | Glucose is produced. Co2 is utilized in the dark reaction. |
What are the primary products of the light-dependent reaction?
The products of the light-dependent reactions, ATP and NADPH, are both required for the endergonic (def) light-independent reactions. The light-dependent reactions involve two photosystems called Photosystem I and Photosystem II.
What is the first step in the light dependent reactions?
The overall function of light-dependent reactions, the first stage of photosynthesis, is to convert solar energy into chemical energy in the form of NADPH and ATP, which are used in light-independent reactions and fuel the assembly of sugar molecules.
What is the primary role of ATP synthase in the light dependent reaction?
In the light-dependent reactions, energy absorbed by sunlight is stored by two types of energy-carrier molecules: ATP and NADPH. The hydrogen ions are allowed to pass through the thylakoid membrane through an embedded protein complex called ATP synthase. This same protein generated ATP from ADP in the mitochondrion.
What are the important events and end products of light reaction?
Answer: The important events of light reaction are (i) Excitation of chlorophyll molecule to emit a pair of electrons and use of their energy in the formation of ATP from ADP + Pi. This process is called photophosphorylation. Splitting of water molecule (a) (b) End products of light reaction are NADPH and ATP.
What are the 5 steps of light dependent reactions?
Here are the basic steps:
- Light absorption in PSII. When light is absorbed by one of the many pigments in photosystem II, energy is passed inward from pigment to pigment until it reaches the reaction center.
- ATP synthesis.
- Light absorption in PSI.
- NADPH formation.
Why does the inside of the thylakoid become positively charged?
Why does the space inside the thylakoid become positively charged during the light-dependent reactions? Pigments in photosystems 2 and 1 absorb light. ATP synthase helps H+ ions in the thylakoid space to pass through the membrane to the stroma. It is also called the light-independent reaction.
What is the purpose of carbon fixation?
Carbon fixation or сarbon assimilation is the process by which inorganic carbon (particularly in the form of carbon dioxide) is converted to organic compounds by living organisms. The compounds are then used to store energy and as structure for other biomolecules.
What happens during carbon fixation in the Calvin cycle?
In fixation, the first stage of the Calvin cycle, light-independent reactions are initiated; CO2 is fixed from an inorganic to an organic molecule. In the second stage, ATP and NADPH are used to reduce 3-PGA into G3P; then ATP and NADPH are converted to ADP and NADP+, respectively.